Date:         Wed, 5 Sep 2001 10:03:08 -0400
Reply-To:     Michael Townsend <townsend@RTP.ERICSSON.SE>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Michael Townsend <townsend@RTP.ERICSSON.SE>
Subject:      Re: do we have a vacuum leak?
Comments: To: "Scott G. Terry" <sgterry@engineering.ucsb.edu>
Content-Type: text/plain; charset=ISO-8859-1

Hi all,

Well, I finally replaced my fuel injectors and fuel pressure regulator.  I
thought that I would publish my measurements for inclusion into Scott's JVV
(Journal of Vanagon Vacuum -- It really sucks!).  I don't know the ambient
pressure at the time of measurement -- Durham is in the middle NC, halfway
between the coast and the mountains, so it is probably a nice average.  My
vacuum guage read 13" Hg with an eyeball rms average.  My original fuel
pressure regulator measured (with Robert's guage -- uncalibrated) 32 psig
with the vacuum and 39 without.  My new Bosch fuel pressure regulator read
31 with the vacuum and 38 without.  Still a little high, and not much
different then the old one.  Maybe I wasted my money.  Oh well, at least I
have a spare now.  For fun, I hooked my (uncalibrated) Mity Vac hand pump
and guage directly to the fuel pressure regulator, and noted the fuel
pressure to see what it would take to get down to 29 psig:

"Hg             psig
22              29
17              30
15              31

Michael Townsend
Durham NC
90 Carat